Vacuum attachment for cylinder hones



Maw}! 27, 1934. K. w. CONNOR Er AL.- 2,

VACUUM ATTACHMENTFOR CYLINDER HONES 7 Filed Jan. 31, 1931 2 Sheets-Sheet -l I 67 Z l 1/ I N T0125. 34 Z Fir/Fe i. Fred M lferfl.

March 27, 1934. K. w. CONNOR EI'AL 1,952,492

VACUUM ATTACHMENT FOR CYLINDER ONES Filed Jan. 51, 1931 2 Sheets-Sheet 2 f 'ved M (re rn.

mentioned type Patented Mar. 27,1934

i 1,952,492- I VACUUM ATTACHMENT Foa CYLINDER norms Kirke W. Connor and Fred M. Kern, Detroit,

Mich., assignors to Micromatic Hone Corporation, a corporation of Michigan Application mm. 31, 1931; Serial No. 512,719

22 Claims. ((11. 51-473) Our invention relates tofcylinder honing mech-..

.anisms and particularly to a mechanism of the type wherein the material, eroded from the cylinder wall and the hone, is withdrawn from within the cylinder by an associated vacuum system. Since the advent of dryhoning-that isto' say,

of ,a honing process in which no lubrication is employed between'the honeand the surface to be eroded, various methods of employing vacuum 0 have-been introduced for drawingth particles, freed from the wall and hone, out of the' cylinder. While the various methods employed proved somewhat effective, they were found'to, be more or less unsatisfactory because only a portion of the dust could berem'oved from within the cylinder during the. honing operation. The apparatus employed with such vacuum to be cumbersome and unwieldy as it was necessaryto remove the entire mechanism in order to make a measurement of the cylinder diameter. In this arrangement a complete setup of the apparatus was required each time a measurement was made.

In practicing our invention, we provide a vac- 25 uum system fora honing mechanism which is so associated with a cylinder to be honed that the cylinder wall constitutes a portion of the orifice on the vacuum side of the mechanism. The vac- I uum mechanism is so constructed that the lioning tool and its associated operating mechanism are removable from within the cylinder without disturbing the vacuum mechanism. The 'operat-' ing 'mechanism is removable from the'honing I tool and when separated therefrom after the hone has been moved to the lower portion of the cylinder, the upperfportion of the cylinder left free to be measured. After a measurement has been taken the operating mechanism is again.

connected to the honing tool, the setting 0! which need not be changed during the measuring operation.

Accordingly, provide a mechanism cylinder with avacuum system. which shall operate independently of the actuating mechanism for the honing tool and shall employ the cylinder wall-to be honed asa portion of its suction orifice.

. Another object of our invention is to provide a vacuum system for a rhoning tool of the above .to the cylinder wall that the honing toolwillbe constantly operated in a flow of air bounded by said wall.

devices proved vacuum type with an anchoring 'nism embodying features of our invention,

one obiect of our invention is toy for honing the wall of a.

with an-adapter which shall so. relatethe suction side of thevacuummechanism' a vacuum honing tool of the above mentioned type with an actuating mechanism which shall .operate'independently, of the vacuum system to effect a universal movement with the. honing tool in order that'the tool may be operated'when the mechanism is tilted at an angle.

A still further object of our invention is to i provide an actuating mechanism for a honing tool of the abovementioned type which shall be disconnectibley therefrom when the honing tool is retained suspended within the cylinder in order that the diameter of the cylinder may be measured without the necessity of removing the tool orof changing its" adjustments.

, A still further object of our invention is to provide an operating shaft for a honing mechanism of the-above mentioned type, with a pluralityofrelated springs and an adjusting memher which shall regulatethe length of the stroke of the shaft by adjusting -the pointfrom which 7 one of the springs and its'supporting member will be moved into solidrelatio'n. Y

A still further object of our invention is to pro vide a honing mechanism of the above mentioned member which 0 shall be pivoted to the device in such a manner as to permit the device to be moved into engagement with one of a plurality of the cylinders and ;to. permit it to be mounted on any automobile cylinder irrespective of its position relative 150 the radiator or cowling thereof. j Numerous other objectsand features of. novelty of our invention will be specifically pointed out, or will become apparent when referring for a. better understanding ofour invention to the accompanying drawingi wherein: Figure 1' is a broken view partly in section and partly in elevation of a vacuum honing mechafollowing description in conjunction with-the Figure 2 is a. sectionalview 'ofthe structure showriin Fig. 1 taken along the line 2- 2 thereof,

Figure 3 is a view of the structure shown in Figs. -1 and 2 taken along theline 3- 3 of Fig. 2, Figure 4 is {a sectional view of the structure shown in Fig.3 taken aiong'the line 4-4 thereof, Figure 5 is a-sectiohal view of the structureshown in Figure 3 taken along the line 5-5 thereof. and I g v Figure 6 is a view of thestructur'e shown in Fig.'2taken'-aiong the line 6-6 thereof. Our'invention comprises in general a vacuum system 10-, ahoning-tool '11, atool operating mechanism' 12, and a clamping member 13, all of which vi tractible honing elements 15 supported thereon and an adjustable knob 16 on its upper end for.

the purpose of adjusting the position of the honing elements 15. Trunnions 17 are provided beneath the adjusting knob 16 on the sides of the body portion 14 in diametrically aligned relation. honing tool well known in the art to be suitable may be employed with our vacuum and actuating mechanism, but it is to be understood that we prefer to employ the honing tool which has been described and illustrated in the co-pending application of F. M. Kern, Serial Number 537,576, filed May 15, 1931, and assigned to the assignee of the present invention. The novel features and the operating advantages of this honingtool hasbeen clearly set forth in the above mentioned co-pending application and will not be herein described.

The vacuum system 10, comprises a. vacuum mechanism 18, which may be of any well known type, the particular form and design of which constitutes no part of our present. invention. The vacuum mechanism 18 is provided with an lectrically driven suction fan of the well known- Lype, the driving means being an electric motor which is energized through the line 19 provided with a switch 21 and having a plug 22 on its end by me: .15 of which the line is connected to a circuit.

The vacuum mechanism 18 is removably mounted at its suction side to the upper end of a mam-- fold 23 which is provided with a closed fiat portion 24 at its lower end which rests upon a cylinder block 25, adjacent to a cylinder to be honed.

A pair of hinge extensions 26 project rearwardly i on the bottom portion of the manifold 23, between which a hub 27 on the clamping member 13 is retained by pin 28 in such manner as to be freely movable thereon. The upper end of the hub 27 is slotted and provided with a bolt 29 for the purpose of drawing the upperportion of the hub tightly about the pin 28 to retain it against longitudinal movements in the members. 1

The clamping member 13 is provided with a slo 30, shown in Figs. 2 and 6, by means of which the clamping member and the manifold are secured to the cylinder head by having the slot placed over a stud and a bolt screwed against the top face of the clamping member. The bottom face of the clamping member 13 and the flat portion 24 of the manifold 23 form a flat surface which engages the top surface of the cylinder block throughout the length of the manifold and the clamping member. The hinge connection between. the clamping member and the manifold,

, one of its sides which registers with the laterally extending portion 31, forming an enclosure therefor. An outwardly presenting U-shaped. flange 34 is provided about the cut-a-way portion of the adapter 33 which registers with the flange 32 on the manifold 23. to therebyretain the adapter in fixed, substantially a'ir tight relation, on the -flan'ge 36 which substantially seals the upper portion of the adapter.

In this arrangement the orifice on the vacuum side of the mechanism includes the hollow manifold 23, the adapter 33, the bell cap 35 and the cylinder wall to be honed. The suction end of the orifice is at the lower end of the cylinder to be honed and any particles that may be loosened from the tool and the cylinder wall during the honing operation, being positioned withinthe vacuum orifice, and the air stream, will be drawn into the vacuum mechanism.

-While we have shown and described but a single adapter 33, it is to be understood that we also employ other sizes of adapters which are provided with a flange on their top edge, the outer diameter of which is the same as the outer diameter of :the adapter 33 in order to be engageable by the flange 36 of the bell cap 35. The purpose of the reduced diameters of the adapters is to enable an operator to select one having approximately the same diameter of the cylinder wall to thereby effect a substantially uniform air passage on the suction side of the vacuum mechanism;

The tool operating mechanism 12 comprises a shaft 37 which extends through a central opening 38 in the bell cap 35 and is provided on its upper end with a hexagon shaped extension 39 which is engageable by a chuck 40 or other suitable means of a motor-operated tool-driving mechanism (not shown). The lower end of the shaft 37 is split and bent so ,as to constitutea bifurcated extension 41, upon which a collar 42 is pivotally suspended by rivets 43, as shown in Fig. 1. Arcuate shaped slots 44 are provided, midway between the rivets 43, on the sleeve 42 for the purpose of engaging the trunnions 17, on the body portion 14 of the honing tool 11. The slots 44 are soconstructed that they are readily dethe collar 42, but is sufficiently exposed therebetween that adjustment may readily be made without the necessity of disconnecting the operating' mechanism 12 from the honing tool. Below the bell cap 35 a heavy washer 45 is loosely supported adjacent to the bifurcated extension 41, by means of a spring washer 46 which registers with a groove 47in the shaft 37 as disclosed in Fig. 5. The" washer is so mounted as to be freely movable angularly on the shaft to be capable of engaging the under side of the flat surface of the bell cap 35 when the shaft is disposed angularly thereto. The outer surface of the top portion of the bell cap 35 is engaged by a washer 48, which is pro-. vided with a downwardly and outwardly extending flange 49, for encompassing the openings 38 in the top central portion of the bell cap. The washer 48 provides a seal for the cap which is always available for sealing the opening 38 irrespective of the operating relation of the shaft 37 with the bell cap. The upper surface 51 of the washer 48 is of arcuate shape and the central opening 52 therethrough is of greater diameter than that of the shaft 37 topermit an angular movement of the shaft relative to the washer.

A sleeve 53, which snugly engages'the shaft 3'7,"

body portion of the sleeve. The bottom surface 56 of the flange 54 which abuts against the arcuate surface 51 of the washer 48 is of like arcuate shape which permits an angular movement of the shaft 3'7 relative thereto anda floating movement relative to the bell cap during the time the cap 35 is effectively sealed against an inflow of air.

A second sleeve 57, .on the shaft 37, is provided with a body portion 58, of a diameter somewhat greater than that of the shaft. An outwardly directed flange 59 is formed on the'upper end of the body portion 58 while on its lower endan inwardly. directed flange 61 is provided. The flange 59 engages the upper end of the spring 55 which encompasses the body portion 58 of the sleeve while thelower flange\61' supports the lower end of a spring 62 within the body portion 58. This arrangement permits the nesting of the spring 62 within the spring 55 when the shjjaft' is moved downwardly. g a i The upper end'of the spring62 abuts against 'a washer 63 provided on the upper end of the shaft 37 and since the sleeve 53 is retained in fixed position on the washer 48 a downward movement of the shaft causes the spring to compress until the bottom surface of-the flange 61 abuts against the upper surface of the sleeve 53 and the spring 62 becomes solid upon itself, in which event the shaft is limited in its downward movement which is the lower end of its stroke.-

To permit the rotation of to the springs 55 and 62 we have provided ball bearings 64, which abut on their. lower edge against the washers 63 and on their upper edges against a washer 6r race,65. The washers and the ball bearings are retained against upward movement on the shaftby a slotted washer 66 which registers in the oppositely disposed grooves 67 in the shaft. In this constructionthe spring abuts against the washer 63 and retains it in fixed position while the washer 65, abutting against the slottedwasher 66, rotates with the.

shaft.

ances the weight of the shaft, the honing element and the motor driving mechanism to therebyrelieve the operator of this weight when the elements thereof are being moved upwardly and downwardly during a honing-operation.

The stroke ofthe honing tool is regulated, in

' accordance with the length-of the cylinder wall,

grooves 67 on the upper in anyone of which the slotted washer 66' may be retained to thereby change the length of the stroke. The washer 66 is illustrated in the drawing asbeing in the topmostslot 67, which effects a maximuni stroke to by a plurality ofspaced our actuating mechanism which may be decreased in length by moving the washer into a lower slot. It is.to be understood that other means besides that of a slotted washer and grooved shaft may be employed for effecting the variation in the stroke length, for example the upper portion of the shaft may be threaded and in place of the" slotted washer a nut may be provided.

In a tool driving assembly just described the actuation ofthe honing tool is accomplished without in anyway interfering with the vacuum system or being interfered with thereby and the driving assembly is just as-flexible and devoid of additional members as if the vacuum system was not employed in conjunction therewith. Theshaft is provided with a universal or floating movement which enables the tool to be operated the shaft relative The springs 55 and 62 are chosen of such'dimensions as to effect a bias which counter-bal when the shaft is tilted at any angle and at the same time the orifice for the vacuum side of the vacuum system is entirely sealed during all positions of the shaft. The bell cap 35 and the bayonet joint on "the end of the shaft, which comprises the extension 41 and the collar 42, are detachable from the adapter 33 and the honing tool 11 respectively. The actuating or driving device may be quickly ,removed after turning the shaft slightly counter-clockwise and. a micrometer reading made in the cylinder without removing or changing the'adjustmentof the honing tool. This driving device is attachable to the honing tool 11 and adapter 33 'by simply placing the device upon the adapter and pushing downwardly on the shaft 37 until the tool 11 is engaged and turning the shaft clockwise to engage the trunnions 17 in the slots 44. Before attaching the device to the tool its adjusting knob 16 maybe actuated to change'the setting of the honing element 15 in accordance with the micrometer reading.

It will thus be seen that the micrometer reading and the adjustment of the honing tool setting may be made without removing the honing tool from within'the cylinder and without in any way 100 interfering with the mechanism which constitutes the vacuum system. In case the small-adapter 33 is employed and the hand of the operator is too large to reach downwardly therethrough into the cylinder, the adapter itself may be lifted upwardly out of engagement with the flange 32 on the manifold 23 to expose the top portion of the cylinder for the reading.

The vacuum side of the system includes the cylinder wall in which the grinding operation occurs immediately within the orifice of the vac,-' uumv system. \I When a particle of metal. or abra-' dant is loosed from the cylinder wall or the bones, respectively. it wilh be directly within the flow of air through the cylinder and will be withdrawn from within the cylinder along with the air- While we have described and illustrated but a single embodiment of our invention it will be apparent to 'anyone skilled in the art that many changes, omissions, additions and substitutions may be made therein without departing from the the accompanying claims.

We claim: '125 l. The combination with a shaft for actuatin a cylindrical tool having a tool engaging means on-its lower end, of a spring about said shaft for balancing the weight of the tool and its actuating device, a supporting member for the shaft between the tool engaging element and the spring, and means associated with said member and shaft for sealing an opening through said supporting member in all positions of the shaft.

2. A portable vacuum devicefor a machine too including. in combination, a suction manifold, securing means for attaching said manifold in fixed relation to a surface to .be machined, an adapter associated with said manifold in such manner as to constitute with said surface an ex.- tension of said manifold, and an operating device for said machine tool projectable into said adapter and surface and independent of said manifold.

3; A portable vacuum device for a machine tool "including, in combination, a suction manifold, 1 5 'means forsecuring said manifold in flxed relation.

to -a surface to be machined, an adapter associated with said manifold in such manner as to constia tute with said surface an extension of said manifold, and a reciprocable operating device for said machine tool encompassed by said adapter and surface at its lower end and independent of said vacuum system the remainder of its length.

4. A portable vacuum and grinding device including, in combination, a manifold attachable adjacent to a cylinder to be honed, a vacuum unit including a motor and fan attachable to one end of said manifold, and an adapter attachable to the other'end of the manifold and extending the vacuum system to the cylinder to be machined, and a grinding device operable through said adapter within said cylinder.

5. The combination with a manifold of a vacuum system for a machine tool, of supporting means for clamping the manifold on a member having a cylinder to be machined, an adapter associated with said manifold .and cylinder in such manner as to constitute with said cylinder an extension of said manifold.

6. The combination with a manifold of a vacuum system for a machine tool, of means for securing said manifold in fixed relation to the end of a cylindrical surface to be machined, an adapter joining said manifold to one end of said cylindrical surface, a cover for said adapter, and an actuating device for said machine tool extending through said cover and separable from said vacuum system with said cover.

7. The combination with a manifold of a vacuum system for a machine tool, of means for securing said manifold in fixed relation to a cylindrical surface to be machined, an adapter joining said manifold to the end of said cylindrical surface, a cover for said adapter and a reciprocal actuating device for said machine tool extending throughsaid cover and separable with said cover from said adapter and tool.

8. A portable Vacuum device for a grinding element including, in combination, a manifold attachable adjacent to a cylinder, a vacuum device including a blower and a motor attachable to one end of the manifold, an adapter attachable to the other end of the'manifold and extending the manifold to the cylinder, and an actuating device for said grinding element removably mounted in sealed relation to said adapter.

9. An actuating shaft for a tool which machines the walls of a cylinder, a pair of springs about said shaft for balancing the weight of the device, a flanged sleeve supporting the upper portion of one spring and the lower portion of another spring for limiting the stroke of said shaft when the sleeve and one of the springs are in solid engagement.

10. The combination with a shaft for actuating a cylinder machining tool, havinga tool engaging means on its lower end, of a pair of springs about said shaft for balancing the weight of the tool and its actuating device, a supporting member for the shaft between the tool engaging element and the springs and means associated with said member and shaft for sealing an opening through said supporting member in all positions of the shaft.

11. The combination with a tool for machining a cylindrical surface, of a cover mounted in fixed relation over one end of said cylinder and having an aperture, a shaft extending through said aperture for reciprocable movement normal to said cover, and means for sealing said shaft and cover in such manner as to retain the sealed relation when the shaft is tilted at an angle to the surface of said cover.

12. The combination with a tool for machining a cylindrical surface, of. a cover mounted over aeeaaea one end of said cylindrical surface in fixed relation thereto having 'an aperture, a shaft extending through said cover, means for sealing said aperture about said shaft in such manner as to permit a turning and reciprocating movement between the shaft and the cover at an angle to said cover without substantially affecting said seal.

13. The combination with a tool for machining a cylindrical surface, of a cover mounted over one end of said cylindrical surface in fixed relation thereto and having an aperture. a shaft extending through said aperture, means for. sealing said aperture about said shaft in such manner as to permit a floating movement between the shaft and cover and means on the shaft and tool which when engaged permits a universal move ment therebetween.

14. A vacuum system for a machine tool provided with a manifold having a clamping member associated therewith for supporting the manifold adjacent to a cylinder to be machined, a cylindrical adapter having a diameter confrm ing substantially to the diameters of the cylinders to be machined, and attachable to the manifold in alignment with a cylinder to thereby constitute a continuation of the manifold therewith.

15. A vacuum system for a machine tool provided with a manifold having a clamping member associated therewith for supporting the manifold adjacent to a cylinder to be machined, a cylindrical adapter of a diameter to encompass the cylinder to be machined, the said adapter being attachable to the manifold in such manner as to be in alignment with the cylindrical surface and a cover for engaging said adapter and for effecting a tight seal therewith.

16. A'vacuum system for a machine tool provided with a manifold having a clamping member associated therewith for supporting the manifold adjacent to a cylinder to be machined, an adapter removably associated with the manifold and with the cylinder to constitute the cylinder a continuation of the manifold, a cover for said adapter having an aperture therein, a tool driving shaft extending through said aperture and means for sealing said aperture in all positions of said shaft.

1'7. The combination with an adapter provided incontinuation' of a cylinder to be honed, of a 125 vacuum manifold engageable with a side of said adapter, a shaft extending through the adapter and into said cylinder, and means for sealing said shaft and permitting a tilting movement thereto relative to said adapter.

18. An adapter provided in continuation of a cylinder to be honed, a vacuum manifold communicating with the side of said adapter, a shaft for a honing tool extending through the top of the adapter into said cylinder and a cover seal- 135 ing said shaft and adapter in such manner as to permit movement therebetween.

19. The combination with an adapter provided in continuation, of a cylinder to be machined, of an exhausting means engagcable with a side of 140 said adapter, a shaft extending through the adapter to said cylinder, and means for sealing said shaft for permitting a tilting movement thereto relative to said adapter. 145

20. An adapter provided in continuation of a cylinder to be machined, exhausting means communicating with the side of said adapter, a shaft for a. tool extending through the top of the adapter into said cylinder, and a cover sealing 59 said tool and to permit a tilting movement becylinder, and a spring about said shaft to balance tween the shaft and cover during the reciprocation and rotation of the tool.

22, The combination with a tool for machining the walls of a cylinder, of driving means for saidtool a cover'through which said tool operates in rotation and reciprocation and which covers the opening of the cylinder at one end,'and means for providing a flow of air through the cylinder toward the end in which the'tool was inserted therein to exhaust the residue from the machining operation from said cover.

/ KIRKE W. CONNOR.

- FRED M. KERN.

rue 

